Golf and other playing ball.



P. A. MARTIN d2 J. STANLEY. GOLF AND lO'fHER PLAYING BALL. APPucmon mso FEB. 24. me.

1 1 '98,366 Patente-Sept. N6.

unimi) STATES vr'nfrnier-v FATIELICK ALPHONSUS MARTIN AND lJ'OHIT STANLEY, Gl? BRMIGB'TAM, ENGLAND.

GOLF AND OTHER PLAYING BALL.

Application filed February 24, 1916. Serial No. 80,2557' ,l

To @ZZ 'wlw/m t may concern: l

Be it lmown that we, PATRICK ALPHONSUS lvlnn'riu and Join: STANLEY, subgeots of the King of Great Britain, residingl at Birmingj provide a solid core or center for a golf or other playing ball which, byvirtue of its construction, is maintained in a permanent state or" compression independently of the compression produced by the exterior windet tape or thread, thereby producing a. ball which possesses enhanced driving powers.

According to the invention the core is composed of soft unvuleanized rubber in the 'forni of one or more strips or windings wound upon themselves, iii a-state of tenwhich it is composed, in a state of compression, to forni a nucleus or sphere maintained, by virtue of the, tensioning windings of' sion with a tendency to expand outward. Incorporated with the rubber, in the course or its manufacture is a suitable granulated material, such as einery, glass, stone, nietallie filings or the like, the proportionsof which may vary from a small percentagetc a large percentage of the `weight of the Figurel ofthe accompanying drawings represents a section partly in elevation,

through a golf ball constructed in accordance with 4the present invention. Fig. 2 is a section through 'the core. Fig. 3 represents in side elevation the core cut into two halves, sliowing the-dorm Vthe two halves assume.

Fig. 4 is' a similar view of the two halves of the core, but as seen from a position .at right angle-e to that from .which Fig. 3 is'seen. Fig. 5 sliovcfsthev core being wound. Y

le carrying out the production of the iin- 'ing witnesses.

proved golf ball a7 bass' of unvulcanized rubber is mixed wit jarsuitable granulated material such as eineil'y, glass, stone, metallic lilings, lor the like'in suitable proportions to give the desired weight te the ball. The mixtureY is then rolled or fashioned into a iat strip or tape, which is wound upon itself in a state jtension as shown in Fig. 54, into a ball or nucleus a, forming the.

coreor center of the ballwhicli is maintained ina permanent statefjof compression. The presence of the granulated material lessens the molecular friction or adhesion Y of the rubber, 'so that if the core be out into two halves the diametrical plane of each halfl expands outward so as to assume a part spherical surface, vas seen in Figs. 3 and l. This soft rubber core-o has wound upon it the usual highly-tensioned windings or wrappings of rubber tape or thread,

Specication 'of Letters Patent. Patented Sel-5pt. ft2.,

which further compresses the rubber center,

and tliewhole is inclosed in the ordinary gutta-peroha cover or casing c. l l

In a modification the granulated material ma be omitted.

aving fully described our invention, what we desire toelaim and secure by Letters Patent is 1. A core for a playing ball formed by a winding of tensioneid unvulenized-rubber which is incorporated voith a 'granulated' weighting material, .said corebeing maintained in a permanentvstate of compression.

2. A playing ball comprising a center composed of a tensioned' winding of soft unvulcanized rubber, a weightingniaterial incorporated witlrsaidrubber, an exterior winding of tensioned material' upon the oenter, and an outer cover incl'osing the core and surrounding windingtsaid core being maintained in'a permanentstate'of compression independently of the surrounding `winding.

In ltestimony 'whereof we have hereunto set ourli'ands in presence otV two subscrib- PATEK ALPHONSUS llli'lltTlll. A I v JOHN S'lillllllll.4

,Witnessesr p I Huisnr NORTON Siinnrnii,

elli-Ionian Grrrrucs. 

